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Class 300 Stainless Steel Fittings

View Price list of Class 300 Galvanized Pipe Fittings and Class 300 Fittings Pressure Rating

Pipe fittings are produced by us for customers to be used in piping systems with different grades, specifications and pressure requirements. Rajveer Stainless And Alloys is a leading supplier and manufacturer of pipe fittings. We specialize in class 300 pipe fittings. The Class 300 Fittings Pressure Rating is for malleable iron fittings that are produced through various manufacturing techniques. The temperature rates at which the Class 300 Pipe Fittings can operate, as well as the diameters are governed by this class. The class 300 can range from ¼ inches to 3 inches in diameter.

Class 300 Stainless Steel Fittings

Reliable Manufacturer of 300# Malleable Iron Fittings & Class 300 MI Fittings

The Class 300 MI Fittings can work under different temperatures with different pressure capacities. The ¼ inch pipes can operate from -20 degrees Celsius to 550 degrees Celsius with the pressure rating ranging from 2000 to 300. The pressure rating of the Class 300 SS Fittings decrease with the increased temperature, as the fittings become vulnerable to cracking under high pressure with increased temperature. The correction selection of the diameter of the pipe with the needed operating temperature makes it safer for the operation. We sell Class 300 Malleable Iron Fittings in all sizes, shapes and grades. You can contact us for different types of Class 300 Galvanized Pipe Fittings and prices.

 

Specification Chart of Class 300 Stainless Steel Fittings

Specifications Class 300
Dimensions BS 3799, MSS SP-79, ASME 16.11
Size 1/8"~48"
Thickness of SCH20, SCH100, XXS, SCH60, XS, SCH140, SCH160, SCH30, SCH120, STD SCH40, SCH80, SCH10,
pressure rating of 6000LBS, 3000LBS, 9000LBS
Thread BSPT, NPT , BSPP
Type DN15-DN1200
Manufacturing Types class 300 lb Cross, class 300 lb Union, 300# Welding Outlet, class 300 Cap, class 300 Half Coupling, 300# Elbow 90 Degree, class 300 Outlet, class 300 Boss, 300# Insert, 300# Elbow 45 Degree, 300# Tee

 

Dimensions of Stainless Steel Class 300 Fittings

NPS
Min Length of Thread
Min WT
Outside Diameter
Center to End
J
B
G
D
45°
90°
C A
1/2
13.6
10.9
3.18
33
22
28
1/4
13.9
12.7
3.18
38
25
33
1
17.3
14.7
3.68
46
28
38
18
17
3.89
56
33
44
18.4
17.8
4.01
62
35
51
2
19.2
19
4.27
75
43
60
28.9
23.6
5.61
92
52
76
3
30.5
25.9
5.99
109
64
86
4
33
27.7
6.55
146
79
106

 

Class 300 Fittings Pressure Rating

Temperature Class
300
1/4 - 1 inches 1 1/4 - 2 inches 2 1/2 - 3 inches
(oF) (oC)
-20 to 150 -29 to 66 2000 1500 1000
200 93 1785 1350 910
250 121 1575 1200 825
300 149 1360 1050 735
350 177 1150 900 650
400 204 935 750 560
450 232 725 600 475
500 260 510 450 385
550 288 300 300 300

How to get pressure rating of class 300 stainless steel fittings?

The class 300 means that the pressure capacity is at 570psi at 600 degrees Fahrenheit temperature. The different material grades of stainless steel have different compositions, different production methods and different mechanical properties. So their pressure containment capacities differ as well. There are pressure classes that denote the pressure containment capacities. The classes range from 150 to 2500, often relating to the pressure in lbs but not necessarily. So the best way to get the pressure rating of any class of fitting from a particular material grade is to look at the mechanical properties table.